remove keystone v2.0 vim function tests

[yong sheng gong]

after installation via devstack, the keystone API 2.0 is not useful for region list:

gongysh@ubuntu64:~$ export OS_IDENTITY_API_VERSION=2
gongysh@ubuntu64:~$ openstack token issue

+------------+-----------------------------------------------------------------------------------------------------------------------------------+
| Field | Value |
+------------+-----------------------------------------------------------------------------------------------------------------------------------+
| expires | 2017-05-03T08:35:09+0000 |
| id | gAAAAABZCYgt9URpJoFCWfqSlLcMO0gFonP4hpA57VD0I_L3wikLS52WD1pJ6dnEY_uSw6XScUID1vgfO5OpHJgBK-KCZV5N0-hWOfYUHOUs- |
| | wEmo_o7igxrMna3KaiKoHoKt28LOIBoA9s47gISICBwm-mTO1gXBQ1HUcj4H64xoAb7MNG3rx0 |
| project_id | 64dd86d4c664498ba2baa873bdabdbef |
| user_id | 1d8a0eedb4cf4e42b944d8566bb27610 |
+------------+-----------------------------------------------------------------------------------------------------------------------------------+
gongysh@ubuntu64:~$ curl http://localhost/identity/v2.0/regions -H "Accept: application/json" -H "X-Auth-Token: gAAAAABZCYgt9URpJoFCWfqSlLcMO0gFonP4hpA57VD0I_L3wikLS52WD1pJ6dnEY_uSw6XScUID1vgfO5OpHJgBK-KCZV5N0-hWOfYUHOUs-wEmo_o7igxrMna3KaiKoHoKt28LOIBoA9s47gISICBwm-mTO1gXBQ1HUcj4H64xoAb7MNG3rx0"
{"error": {"message": "(http://localhost/identity/v2.0/regions): The resource could not be found.", "code": 404, "title": "Not Found"}}gongysh@ubu

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/462023

[OpenStack Infra (hudson-openstack)]

Change abandoned by gongysh ([e-mail]) on branch: master
Review: https://review.openstack.org/462023
Reason: fixed by https://review.openstack.org/#/c/449956/40